.
Thread 3 (Thread 0x7f37602a3700 (LWP 20031)):
#0  0x00007f3768f7ad93 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007f37699c9136 in g_main_context_poll (n_fds=3, fds=0x7f37580010c0, timeout=-1, context=0x1b9c5a0, priority=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3412
        poll_func = 0x7f37699d60b0 <g_poll>
#2  g_main_context_iterate (dispatch=1, block=<optimized out>, context=0x1b9c5a0, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3113
        timeout = -1
        some_ready = <optimized out>
        fds = 0x7f37580010c0
        max_priority = 2147483647
        nfds = 3
        allocated_nfds = <optimized out>
#3  g_main_context_iterate (context=0x1b9c5a0, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3055
        some_ready = 1476399296
#4  0x00007f37699c959a in g_main_loop_run (loop=0x1b9c550) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3312
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#5  0x00007f3769f9a426 in gdbus_shared_thread_func (user_data=0x1b9c570) at /build/buildd/glib2.0-2.31.20/./gio/gdbusprivate.c:276
        data = 0x1b9c570
#6  0x00007f37699ea7f5 in g_thread_proxy (data=0x1b9a6d0) at /build/buildd/glib2.0-2.31.20/./glib/gthread.c:801
        thread = 0x1b9a6d0
#7  0x00007f3769258e9a in start_thread (arg=0x7f37602a3700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7f37602a3700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 2029411745785444558, 140736098996192, 139875813308864, 0, 3, -2141695340532991794, -2141679944083965746}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#8  0x00007f3768f8674d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#9  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 0x7f375e898700 (LWP 20034)):
#0  0x00007f3768f7ad93 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007f37699c9136 in g_main_context_poll (n_fds=1, fds=0x7f37540010e0, timeout=-1, context=0x1ba7f00, priority=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3412
        poll_func = 0x7f37699d60b0 <g_poll>
#2  g_main_context_iterate (dispatch=1, block=<optimized out>, context=0x1ba7f00, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3113
        timeout = -1
        some_ready = <optimized out>
        fds = 0x7f37540010e0
        max_priority = 2147483647
        nfds = 1
        allocated_nfds = <optimized out>
#3  g_main_context_iterate (context=0x1ba7f00, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3055
        some_ready = 1409290464
#4  0x00007f37699c959a in g_main_loop_run (loop=0x7f37540010c0) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3312
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#5  0x00007f375e89d96b in dconf_context_thread (data=<optimized out>) at dconfcontext.c:11
        context = 0x1ba7f00
        loop = <optimized out>
        __PRETTY_FUNCTION__ = "dconf_context_thread"
#6  0x00007f37699ea7f5 in g_thread_proxy (data=0x7f3758003f20) at /build/buildd/glib2.0-2.31.20/./glib/gthread.c:801
        thread = 0x7f3758003f20
#7  0x00007f3769258e9a in start_thread (arg=0x7f375e898700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7f375e898700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 2029411745785444558, 140736098994560, 139875786000832, 0, 3, -2141648359496353586, -2141679944083965746}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#8  0x00007f3768f8674d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#9  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7f376d664980 (LWP 20028)):
#0  0x00007f3768ecc445 in __GI_raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
        resultvar = 0
        pid = <optimized out>
        selftid = 20028
#1  0x00007f3768ecfbab in __GI_abort () at abort.c:91
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x7f376c9a7b78, sa_sigaction = 0x7f376c9a7b78}, sa_mask = {__val = {139875961594621, 139875997638752, 1, 140736098996880, 139875960494962, 139876021992312, 206158430232, 140736098996896, 140736098996672, 139874207231278, 206158430256, 39840560, 12232656614401491616, 733710446261921891, 0, 140736098998842}}, sa_flags = 1761657603, sa_restorer = 0x7f376c9a7e32}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f3768ec510e in __assert_fail_base (fmt=<optimized out>, assertion=0x7f376c9a7b78 "!xcb_xlib_threads_sequence_lost", file=0x7f376c9a7e32 "../../src/xcb_io.c", line=<optimized out>, function=<optimized out>) at assert.c:94
        str = 0x25feb30 "\260\321\251\002"
        total = 4096
#3  0x00007f3768ec51b2 in __GI___assert_fail (assertion=0x7f376c9a7b78 "!xcb_xlib_threads_sequence_lost", file=0x7f376c9a7e32 "../../src/xcb_io.c", line=273, function=0x7f376c9a7f58 "poll_for_event") at assert.c:103
No locals.
#4  0x00007f376c935683 in poll_for_event (dpy=<optimized out>) at ../../src/xcb_io.c:270
        req = <optimized out>
        event = <optimized out>
        event_sequence = <optimized out>
        __PRETTY_FUNCTION__ = "poll_for_event"
#5  0x00007f376c9356a1 in poll_for_response (dpy=0x1a7cb40) at ../../src/xcb_io.c:288
        response = 0x0
        error = 0x1a601b0
        req = <optimized out>
        __PRETTY_FUNCTION__ = "poll_for_response"
#6  0x00007f376c935dfd in _XEventsQueued (dpy=0x1a7cb40, mode=<optimized out>) at ../../src/xcb_io.c:362
        response = <optimized out>
#7  0x00007f376c92749d in XPending (dpy=0x1a7cb40) at ../../src/Pending.c:55
        ret_val = <optimized out>
#8  0x00007f376b26e0b4 in gdk_event_source_check (source=0x1a601b0) at /build/buildd/gtk+3.0-3.3.18/./gdk/x11/gdkeventsource.c:297
        event_source = 0x1a601b0
        retval = <optimized out>
#9  0x00007f37699c8b73 in g_main_context_check (context=0x1a9b760, max_priority=2147483647, fds=<optimized out>, n_fds=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:2995
        result = <optimized out>
        check = 0x7f376b26e060 <gdk_event_source_check>
        source = 0x1a601b0
        pollrec = <optimized out>
        n_ready = <optimized out>
        i = <optimized out>
#10 0x00007f37699c90d6 in g_main_context_iterate (dispatch=1, block=<optimized out>, context=0x1a9b760, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3115
        timeout = 985
        some_ready = <optimized out>
        fds = 0x29bc3a0
        max_priority = 2147483647
        nfds = 15
        allocated_nfds = <optimized out>
#11 g_main_context_iterate (context=0x1a9b760, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3055
        some_ready = 43762592
#12 0x00007f37699c9264 in g_main_context_iteration (context=0x1a9b760, may_block=1) at /build/buildd/glib2.0-2.31.20/./glib/gmain.c:3179
        retval = <optimized out>
#13 0x00007f3769f66864 in g_application_run (application=0x1a46040, argc=<optimized out>, argv=0x7fffad3015c8) at /build/buildd/glib2.0-2.31.20/./gio/gapplication.c:1496
        arguments = 0x1a35100
        status = 0
        i = <optimized out>
        __PRETTY_FUNCTION__ = "g_application_run"
#14 0x000000000042b969 in main (argc=1, argv=0x7fffad3015c8) at nautilus-main.c:101
        retval = <optimized out>
        application = 0x1a46040